Orchard heater



Oct. 25, 1955 Filed Sept. 22, 1950 E. E. CHINN 2,721,608

ORCHARD HEATER 2 Sheets-Sheet l INVENTOR.

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E. E. CHlNN ORCHARD HEATER Oct. 25, 1955 2 Sheets-Sheet 2 Filed Sept. 22, 1950 FIG. J.

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United States Patent ORCHARD HEATER Elmer E. Chinn, Yucaipa, Calif.

Application September 22, 1950, Serial No. 186,289

1 Claim. (Cl. 158-91) This invention relates to orchard-heating devices, and more particularly to an orchard heater of the type which employs liquid fuel.

A main object of the invention is to provide a novel and improved orchard heater which is very simple in construction, which is very economical in the use of fuel, and which provides a maximum air-heating effect with a minimum amount of smoke or smudge.

A further object of the invention is to provide an improved orchard heater which is very inexpensive to manufacture, which is very eflicient in operation, which is economical in the use of fuel, which is rugged in construction, and which is very simple to operate.

Further objects and advantages of the invention will become apparent from the following description and claim, and from the accompanying drawings, wherein:

Figure 1 is a side elevational view of an improved orchard-heating device constructed in accordance with the present invention;

Figure 2 is a top plan view of the orchard heater of Figure 1;

Figure 3 is a vertical cross-sectional view taken through the orchard heater of Figures 1 and 2;

Figure 4 is a horizontal cross-sectional detail view taken on line 44 of Figure 3;

Figure 5 is a horizontal cross-sectional detail view taken on line 5-5 of Figure 3;

Figure 6 is a perspective view of the baflie plate member employed in the stack portion of the heater of Figures l to 3;

Figure 7 is a perspective view of the flanged stacksupporting collar employed on the burner of the orchard heater.

Referring to the drawings, the heater is designated generally at 11, and comprises a bottom pot adapted to contain liquid fuel, such as fuel oil or the like, and which is provided with a filler plug 13 for the purpose of pouring liquid fuel into the pot. The fuel pot 12 has a domelike top wall 14 which is centrally formed with a flanged opening 15. Mounted over said flanged opening is a collar member 16 which is generally circular in shape and which is formed with a depending annular flange 17 adapted to fit over and frictionally bind with the flange of the opening 15, as shown in Figure 3. The collar member 16 is formed with an outer, upstanding, annular flange 18, and with an inner, upstanding, annular flange 19, the flange 18 being at the periphery of the collar member and the flange 19 being spaced inwardly from said flange 18 and being concentrically arranged with respect thereto. Mounted on the collar member 16 inwardly adjacent to the peripheral flange 18 is a first stack section 20 which is generally conical in shapeand which tapers upwardly, as shown in Figure 3. The lower portion of the stack section 20 is formed with uniformly distributed, staggered apertures, shown at 21. Mounted on the collar member 16 inwardly adjacent the upstanding, annular flange 19 is a sleeve member 22 formed over Patented Oct. 25, 1955 ice - its area with uniformly spaced, staggered apertures 23.

The sleeve member 22 is substantially smaller in diame-' ter than the stack section 20 and extends vertically for a substantial distance upwardly inside the stack section, but is only about two-thirds of the length of the first stack section 20. Designated at 24 is a circular disc member having the crossed bar elements 25 and 26 secured thereon, the ends of said bar elements being downwardly bent, as shown at 27, and being disposed over the top rim of the stack section 20. The disc member 24 is substantially smaller in diameter than the top end of the stack section 20 and defines a baifle plate positioned on the top end of said stack section 20. Designated at 28 is a second stack section which is fitted over the downwardly bent finger elements 27, and is frictionally secured thereby in upstanding position over the top of the first stack section 20, as shown in Figure 3. The second stack section 28 is of substantial length and is preferably cylindrical in shape. Designated at 29 is a flanged cover member which may be positioned on the top of the second stack section when the heater is not in use.

In using the heater, liquid fuel is introduced into the burner pot 12 and said fuel is ignited. The collar member 16 carrying the stack sections and the sleeve member 22 is then placed over the burner pot, the top cover 29 of the second stack section being removed. The heat of the flame in the burner pot causes a draft rising upwardly through the sleeve member 22, the first stack section 20 and the second stack section 28. This draft causes air to be drawn into the first stack section and the sleeve member through the openings 21 and 23. The air entering the sleeve member 22 mixes with the burning fuel and provides thorough combustion thereof, the rate of movement of the burning gases being retarded by the baffle plate 24 positioned over the top end of the sleeve member, additional air being provided in the space between the top end of the sleeve member and the bafiie plate by the air currents produced by the stack 28, whereby air in the space between the sleeve member 22 and the wall of the first stack section 20 is drawn upwardly into the space subjacent the baflle plate 24. Therefore, a second stage of combustion occurs in the space beneath the baffle plate 24. The fuel gases, therefore, are thoroughly burned, and said fuel gases as well as a substantial amount of warmed air from the space between the sleeve member 22 and the stack section 20 are drawn upwardly into the second stack section 28. The heated air and gaseous products of combustion leaving the top end of the second stack section 28 are, therefore, substantially free of smoke or smudge, and the heat values in the fuel are substantially entirely transmitted to the gaseous products of combustion and heated air leaving the second stack section 28.

It will thus be seen that a very eflicient heater of the type employing liquid fuel has been provided, which is very inexpensive to manufacture and which requires no additional adjustments after being ignited.

While a specific embodiment of an improved orchard heater of the liquid fuel type has been disclosed in the foregoing description, it will be understood that various modifications within the spirit of the invention may occur to those skilled in the art. Therefore, it is intended that no limitations be placed on the invention except as defined by the scope of the appended claim.

What is claimed is:

An orchard heater comprising a burner pot adapted to contain liquid fuel, said pot having a central top opening, an annular collar member mounted on said pot around said opening, said collar member being concentrically arranged with respect to said opening, an upstanding peripheral flange on said collar member, a second upstanding circular flange on said collar memw... va

6 her located inwardly of the first-mentioned flange, an upwardly tapering stack mounted on said collar member inwardly adjacent said peripheral flange, the lower portion of said stack being formed with air-admission apertures, a sleevemounted on said collar member inwardly adjacent said second flange and rising a substantial distance .above the apertures of said first stack section,-said sleeve being formed with perforations distributed over its entire area, and a horizontal circular bafiie plate secured in theintermediate portion of said stack and located above saidisleeve, said bafile platebeing substantially smaller in diameter than said inter- 4 mediate portion and defining a combustion space therebelow with respect to the top end of said sleeve.

References Cited in the file of this patent UNITED STATES PATENTS 1,086,275 Chinn Feb. 3, 1914 1,091,170 Smith et al. Mar. 24, 1914 1,092,835 Hamilton Apr. 14, 1914 1,908,354 Hodges May 9, 1933 2,050,760 Mahlstedt Aug. 11, 1936 2,370,116 Anderson Feb. 27, 1945 2,396,675 Breese Mar. 19, 1946 

